Save the Date: January 11, 2019 - Viaduct to Tunnel Transition is Happening

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September 19, 2018

Dear community partners,

Mark your calendars – the longest major highway closure to ever hit the Puget Sound Region is scheduled to begin on Friday, Jan. 11, 2019.

WSDOT is closing SR 99 through Seattle for approximately three weeks so crews can complete building the highway and the eight ramps that will allow travelers to enter and exit the new SR 99 tunnel. When the work is complete, SR 99 will be realigned into the tunnel and the tunnel will open to drivers.

We expect the #realign99 closure will have region-wide traffic impacts. WSDOT and its partner agencies have been planning for this closure and will be implementing a variety of strategies to keep people and goods moving. But we will need everyone doing their part to reduce the number of cars on the road.

Share this message with your communities
We hope you will share this message with your communities. WSDOT is making this announcement now in part to give Puget Sound residents more time to make their plans for getting to work, school and home during the closure.

Resources to help make a plan
We have resources and ideas on our website for ways to change commute habits during the closure. We will be sharing more information on Twitter (@BerthaDigs99; #realign99) and at as we get closer to the #realign99 closure and opening the tunnel.

Finally, WSDOT and King County Metro are here to help you plan for the closure and the new tunnel.
WSDOT email:
WSDOT phone: 1-888-AWV-LINE (298-5463)
King County Metro: 206-553-3000
Website: Get Ready website
Brian D. Nielsen, PE
Program Administrator
Alaskan Way Viaduct Replacement Program